Looking for feedback on carbon buildup on tips versus no carbon. - Pontiac G8 Forum: G8 Forums - G8Board.com
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post #1 of 3 (permalink) Old 05-21-2019, 09:18 PM Thread Starter
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Looking for feedback on carbon buildup on tips versus no carbon.

Would like to know how many of you have pretty much spotless exhaust tips on the inner rim after let's say 2-3 weeks of driving, vs black carbon buildup after 2 - 3 weeks of driving. I currently have almost no carbon buildup after two to three weeks of driving. What's weird, is I remember periods of time in the past where I would have carbon build-up after 4 days. Something has definitely changed. Car is running amazing. Hoping I am not too lean.

My 2009 - With the usual suspects. Incl. - Pat G.
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post #2 of 3 (permalink) Old 05-22-2019, 04:29 PM
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Check you spark plugs, if you want to see if you are running Lean. Pure white is lean, should be beige to red/brown on the insulator pending on what additives are used in the gas in your area

'09 PBM GT. #2 "Time to start modding again"
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post #3 of 3 (permalink) Old 05-22-2019, 05:25 PM Thread Starter
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Quote:
Originally Posted by GT Drew View Post
Check you spark plugs, if you want to see if you are running Lean. Pure white is lean, should be beige to red/brown on the insulator pending on what additives are used in the gas in your area
Ha. I change my spark plugs so frequently that they don't have time to get color ! But seriously, I'm just wondering why it fluctuates between not having carbon buildup on the tips and sometimes I can get carbon buildup within days. I hear no pinging, it's funny, because if I switch to a different tune that I have stored, I can get heavy black exhaust tips in same day. So bizarre.

My 2009 - With the usual suspects. Incl. - Pat G.
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